Answer this please

21. It has to be odd (since counting by two's misses it). And it is within one number of counting by five. So it has to be a number on either side of 10, 20, 30, etc (since the numbers on either side of 5, 15, 25 are even). Finally, it has to be larger than 20. So it cannot be 9, 11, or 19. Therefore: 21.

Doctor D21. It has to be odd (since counting by two's misses it). And it is within one number of counting by five. So it has to be a number on either side of 10, 20, 30, etc (since the numbers on either side of 5, 15, 25 are even). Finally, it has to be larger than 20. So it cannot be 9, 11, or 19. Therefore: 21.

Lovely. But this is an English f

If you want your riddle phrased correctly, I can also do that.

if you count by two's, you miss it by one. if you count by five's, you miss it by the same amount. It is greater than 20. What is the smallest number it could be?

Okay, I added the English lesson. So both sides are now covered. However, I see a lot of material on this site that does not raise a grammatical question and so does not call for a grammatical answer. Feel free to throw in your own English lesson if you feel it is lacking.

Doctor Dif you count by two's, you miss it by one. if you count by five's, you miss it by the same amount. It is greater than 20. What is the smallest number it could be?

Pretty good, but you still missed a couple of capital letters. And the apostrophes shouldn't be used.

Type is too tiny...I see I missed the opening "I's." However, my grammar books accept the apostrophe after numbers made plural. Without is also correct, but with is perfectly fine.